From: Ben Greear <greearb@candelatech.com>
To: Gaspar Chilingarov <gasparch@gmail.com>
Cc: netdev <netdev@vger.kernel.org>
Subject: Re: PROBLEM: Linux kernel 2.6.31 IPv4 TCP fails to open huge amount of outgoing connections (unable to bind ... )
Date: Tue, 20 Apr 2010 16:07:37 -0700 [thread overview]
Message-ID: <4BCE33B9.8050101@candelatech.com> (raw)
In-Reply-To: <g2z46c8cb3e1004201517i5641a75cze2ec5bd33e81fb0f@mail.gmail.com>
On 04/20/2010 03:17 PM, Gaspar Chilingarov wrote:
> I would be grateful for hints where to look in the source -- may be I
> can produce some working patches for it.
I've opened 40,000 connections to/from my machine (over external interfaces)
on a slightly hacked .31 kernel. This is 80,000 sockets total. I bind
to local IP and port range, as well as SO_BINDTODEVICE.
I'm using a 64-bit system with 12GB of RAM, quad-core i7 3.3Ghz, etc.
It takes a lot of RAM to do this but you can probably use less RAM in user-space
than I am. Be sure to set your socket buffer sizes small.
Thanks,
Ben
--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com
next prev parent reply other threads:[~2010-04-20 23:07 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-20 22:17 PROBLEM: Linux kernel 2.6.31 IPv4 TCP fails to open huge amount of outgoing connections (unable to bind ... ) Gaspar Chilingarov
2010-04-20 22:31 ` Eric Dumazet
2010-04-20 23:18 ` Gaspar Chilingarov
2010-04-20 23:42 ` Eric Dumazet
2010-04-21 0:14 ` Evgeniy Polyakov
2010-04-20 23:07 ` Ben Greear [this message]
2010-04-20 23:20 ` Gaspar Chilingarov
2010-04-20 23:20 ` Gaspar Chilingarov
2010-04-20 23:30 ` Ben Greear
2010-04-20 23:35 ` Gaspar Chilingarov
2010-04-20 23:49 ` Ben Greear
2010-04-20 23:57 ` Gaspar Chilingarov
2010-04-21 0:14 ` Eric Dumazet
2010-04-21 0:05 ` Eric Dumazet
2010-04-21 0:12 ` Gaspar Chilingarov
2010-04-21 0:14 ` David Miller
2010-04-21 0:30 ` Evgeniy Polyakov
2010-04-21 2:04 ` David Miller
2010-04-21 5:46 ` Eric Dumazet
2010-04-21 8:25 ` Evgeniy Polyakov
2010-04-21 9:02 ` Eric Dumazet
2010-04-21 9:58 ` Evgeniy Polyakov
2010-04-21 10:21 ` Eric Dumazet
2010-04-21 11:27 ` Eric Dumazet
2010-04-21 16:52 ` George B.
2010-04-21 18:27 ` Evgeniy Polyakov
2010-04-21 18:43 ` Eric Dumazet
2010-04-21 18:58 ` Evgeniy Polyakov
2010-04-21 19:26 ` Eric Dumazet
2010-04-21 20:08 ` Evgeniy Polyakov
2010-04-23 2:06 ` David Miller
2010-04-25 14:26 ` Michael S. Tsirkin
2010-04-25 15:56 ` Evgeniy Polyakov
2010-04-25 16:13 ` Eric Dumazet
2010-04-25 16:21 ` Eric Dumazet
2010-04-25 16:35 ` Michael S. Tsirkin
2010-04-25 22:08 ` David Miller
2010-04-21 19:03 ` Narendra Choyal
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